Swing traction gearing



2 sheets-sheen l Nov. 10, 1931. ll.. A. RUSSELL SWING TRACTION GEARING Filed Jan. 15, 1930 l gwuemto/o Lesliefi izz sselldum-Mw Nov. 10,` 1931. 1 RUSSELL SWING TRACTION GEARING v 2 Sheets-Sheen 2 Filed Jam. l5, 1950 Leslie `Wusell.

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Patented Nov. 10, 1931 UNITED --sTATEs PATENT OFFICE'.

vLESLIE A. RUSSELL, or' MILWAUKEE, WISCONSIN, AssIGNoR 'ro KoEIIR'ING coMrANY, or MILWAUKEE, WISCONSIN, A CORPORATION I SWING TRACTON GEARING Application filed. January 15, 1930. SerialNo. 420,892.

The various mechanisms have been devised .for use 1n excavating machines having la swing body and traction means whereby power may be selectively'delivered either to `5 swing the body or to operate thetraction devices. Such mechanisms are often compli f cated and inefiicient, requiring a large number of parts and being correspondingly costly to manufacture.

One of the objects of the present invention is the provision of a gearing assembly for selectively transmitting power leither to the traction devices or to the means for swinging the body of an excavating machine. The gearing assembly which is the subject matter of the present invention is marked by its compactness, simplicity, and eiciency of drive.

In the use of a selective drive for transmitting power to the traction devices or the swing body, it is generally necessary to provide a swing brake for the body which is applied during periods when the traction devices are being operated. It has proved exceedinglyl diiicult to make such a swing brake which is simpleand effective to hold the kbody stationary in respectl to the base when the ex-y cavating/machine is in traction.

A further object .of the invention is the by a simple and small brake will effectivelyprevent the rotation of the swing body.

Going more into detail, a power shaft is provided with a wide faced pinion which is 7in constant mesh with a shiftable gear clutch. This shiftable gear clutch when in one of its positions is in mesh with a second gear or traction idler for driving the trac` tion devices. In another position the shiftable gear clutch engages a similar gear clutch for causing a swinging -of the bod -of the excavating machine. The swing rake is operatively connected-to Vthe second gear clutch by means of a pinion so that application of t e swing brake is effective toprevent rotation of the body of the excavating machine. The second gear clutch` is operatively y provision of a swing brake which is operaconnected with the. swing pinion so thatjthe swing brake derives a large mechanical advantage 1n respect to swinging'action of the excavator body whereby lsuch action is readily prohibited. Shifting instrumentali-- ties for the shiftable gear clutch are'provided together with connections to the swing brake whereby the brake is operated when ing of the invention, reference may be 'had to the following description and accompanying drawings, 1n which- Figure 1 is a sectional vlew with parts broken away, bringing out the relation of' the gear clutches to the power shaft, traction devices, and means for swinging the body of the excavator.

Figure 2 is a sectional view showing the swing brake and its relation to the means for swinging the excavator body, and

Figure 8. is a diagrammatic view bringing out the relationship of the power shaft, swing brake shaft, swing shaft, and traction shaft.

While a preferred specific embodiment of my invention is herein set forth, it is to be understood that I am not to be limited to the' exact constructions illustrated and described because various modifications offI these de'- tails may be provided in putting'the invention into practice within the purview ofthe appended claims.

Referring firstto Figure 1, an excavator body is partially shown at A, the body being mounted upon the traction base B. The excavating machine is provided with any suitable power transmlssion such as .the shaft 1 which 1s operatively connected to a'power source, not shown. `The shaft 1 is provided .with paix, of bevel gears 2 which constantly mesh a similar bevel gear 3 secured tothe power shaft 4. Any' known type of clutching device may be provided for trans'- mitting reverse motions to the power shaft 4 by means of the gears 2 and 3. The power shaft 4 has lsecured thereto a wide faced pinion 5. The traction base B is provided with a swing gear 6 which 4is in mesh with a swing inion 7 secured to a swin shaft 8. A gear c utch 9 is keyed to the swmg shaft 8 and has an extended hub as shown at 10.' Loosely mounted on the extended hub 10 and adapted to slide thereon is a second gear clutch 11 which is4 constantly in mesh with the wide faced pinion 5 secured tothe power shaft 4. The traction base B is provided with any desirable type of traction devices denoted generally at C, which traction devices include a traction shaft 12 having a gear 13 secured thereto. A traction idler gear 14 meshes with the gear 13 and is adapted gear clutc to receive power from the shiftable gear clutch 11 when the same is in the position shown in Figure 1. When the shiftable gear clutch 11 is moved downwardly, the power ,connection to the traction devices C is` discontinued and the two gear clutches are brought into operative relation to operate the swing pinion, whereby swinging of the bol A results.

rning now to Figure 2, the swing brake comprises a brake drum 15 secured to a swing brake shaft 16. The swin brake shaft 16 also carries a pinion 17 whic is non-rotatable 1n respect thereto and meshes with the gear clutch 9. A brake band 1.8 is adapted to cooperate with the brake drum 15 and has an operating shaft 19 therefor.

Shiftm instrumentalities for shifting the 11 are provided and include a yoke 20 to which is pivoted a link 21 which link is also pivoted to an arm 22 secured to a shaft 23. The shaft 23 may be rocked by means of a crank 24 secured thereto which isalso operativel connected to a lever 25 lby means of a ro 26. Another rod 27 having one of its ends connected to the crank 24, has its other end connected to a crank 28 whlch in turn is secured to the shaft 19 for operating the brake band 18.

The operation of the device is as follows Power 1s supplied to the reverse directions controlla le at will by the operator of theI excavatin pwer is in turn transmitte to the wide faced pinion 5 which transmits the same tothe shiftable gear clutch 11. Shifting of the gear clutch 11 is controlled by the lever 25 and 1n the position shown in Figure 1, the shiftable gear clutch 11 is in mesh lwith the traction idler 14 'whereby power is supplied to the traction devices. It is to be noted that in this position the brake band 18 is applied to the brake drum 15 by means of the parts 19, 28, and 27 respectively. The swing brake shaft 16 is therefore held stationary, which in turn prevents rotation of the excavator body A by means of the gear 17, gear clutch 9, 'swing shaft 8, and swing pinion and gears wer shaft 4 'in l machine. "This 7 and 6 respectively. When the lever 25 is moved to cause shifting of the gear clutch 11 in a downward direction, said gear clutch 11 no longer meshes with the traction idler 14 and the drive to the traction devices C is discontinued. The brake band 18 is also released from the brake drum 15 as is obvious. Such movement of the shiftable 4gear clutch 11 causes the same to engage the gear clutch 9, whereby swinging of the excavator body A about the traction base B results, the power being transmitted through 5, 11, 9, 8 and 7.

It can thus be readily seen that my invention provides a :nov-el gearing assembly whereby power may be selectively supplied either to the traction devices or for swinging the body of an excavator. A very eilicient and simple swing brake has also been provided together with connections for causing the'same to be applied incident to the supplying of power to the traction devices.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. In an excavating machine, in combination, a body, a base upon which said body is mounted, a power shaft carried by the body, a wide faced pinion secured thereto, a shiftable gear clutch in constant mesh with said pinion, means for swinging the body in respect to the base, traction devices for the base, and mechanism for shifting the gear clutch so as to selectively drive-the traction devices or the said means.

2. In an excavating machine, in combination, a body, a base .upon which said body is mounted, a power shaft carried by the body, a wide faced pinion secured thereto, a shiftable gear clutch in constant mesh with said pinion, means for swinging the body in respect to the base, power driven mechanism including a gear, the means for swinging the body including a second gear clutch adapted to selectively en age with the shiftable gear clutch upon shi ing of the same to cause a swinging of the body or to engage with said gear to drive said ower mechanism and mechanism for shifting the shiftable gear clutch.

3. In an excavating machine, irr combination, a body, a base upon which said body is mounted, a power shaft carried by the body, a wide faced pinion secured thereto, a shiftable gear clutch inconstant mesh with said pinion, means for swinging the body in respect :to the base, traction devices for the base, the means for swin ing the body including a second gear clutc and mechanism for selectively shifting the shiftable gear clutch to yengage the second gear clutch for swinging the body or to cause operation of the traction devices.

4.- In an excavating machine, in combination, a body, a base lpon which said body 1s mounted, a power aft carried by the bod a wide faced inion secured thereto, a shi table gear clutc in constant mesh wlth said pinion, means for Swingin the body 1n respect to the base, andv inclu ing a second i 5 gear clutch, a driven gear, traction devlces operatively connectedtherewith, and mecha- A nism for selectively shifting the shiftable gear clutch to drive the second gear clutch or the said driven' gear, whereby the swing body and the traction devices` are respectively operated.

5. In an excavatin machine, in combination, a base, traction evices therefor, a body, means for swinging the body, comprising a swin" gear and pinlon, a power shaft, a gear Vvclutch mechanism for selectively connecting the power shaft to the traction devicesor the said means, and a swing brake for' the body operatively connected to the swing pinion, Vthe said swing brake being actuated incident to operation of said gear clutch mechanism f to connect the power shaft to the traction'de-l vices.

6. In an excavatin machine,'in' combination, abase, traction eviees therefor, a body, means for swinging the body including a gear clutch, a constantly driven shiftable` gear clutch, mechanism for shifting the shiftable gear clutch to drive the traction devices'or to engage the iirst named gear clutch for swinging the body, and a swing brake operatively connected to said first named gear clutch for preventing swinging of the body during perlods when the traction devices are being driven. l

7. In an excavating machine,in combination, a base,traction devices therefor, a body,

means for swinging the body including a. gear clutch, a constantl driven shift-.able gear clutch, mechanism flor shifting the shiftable gear clutch to drive the traction devices orto engage the first named gear clutch for swinging the body, a swing brake'opera. tively connected to said first named gear clutch for preventing swinging of the body during periods when the traction devices are being driven, and connections between the shifting ,mechanism and the swin brake whereby the same is operated incldent to operation of said mechanism.

In testimony whereof I alix my signature Y LESLIE A.' RUSSELL. 1 y 

